The Congressional Review Act of 1996 provides a pathway for Congress to overturn regulations, but it has rarely been employed.

According to her office, Murkowski will “announce her plan to introduce a disapproval resolution to veto EPA regulation of greenhouse gases under the Clean Air Act.”

Resolutions of disapproval are referred to the relevant committee of jurisdiction, and if the committee does not act within 20 calendar days, it can be discharged and brought to the floor with a petition by 30 members.